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High gain signal amplifying device adapted for use with a marine mine
US 3,020,843 A
Filed
: 06/04/1942
Issued
: 02/13/1962
Est. Priority Date
: 06/04/1942
Status: Expired due to Term
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Current Assignee
Brown, Charles B.
,
Wadlron S. Macdonald
Original Assignee
Brown, Charles B.
,
Wadlron S. Macdonald
Inventors
Macdonald, Wadlron S.
,
Brown, Charles B.
Application Number
US02/445,750
Time in Patent Office
7,194 Days
Field of Search
US Class Current
102/417
CPC Class Codes
F42C 13/04
operated by radio waves
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